coconutBattery shows great battery life.

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I was just curious a moment ago and decided to check what coconutBattery had to say about my battery status on my 17" MBP.

screenshot20110923at251.png


I think 94% capacity is good for it being over 2 years old. Also, I haven't calibrated it in almost a year...so it's hasn't been taken very good care of.

Just wanted to post this little info.
 

pigoo3

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Does your MacBook Pro have the "user-replaceable" or "user non-replaceable" battery?

- Nick
 
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It's the unibody with the built in 8-hour battery.
 

pigoo3

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It's the unibody with the built in 8-hour battery.

That's what I was thinking. The older style (user replaceable) battery had a 300 "loadcycle" lifespan...the newer (user non-replaceable) battery's have a 1000 loadcycle lifespan.

Since your battery has 105 loadcycles on it...that's roughly 10% of 1000 (or 90% left)...but you're doing a bit better at 94%.

The percent is actually calculated from the "Current Capacity" (12311) divided by the "Design Capacity (13100) = 93.97%...or 94%.

So there is a rough relationship between the number of loadcycles & current capacity...knowing that the battery is supposed to have a lifespan of 1000 loadcycles.

- Nick
 
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Nice. That's interesting information right there. Also nice to know that, even neglected, my battery is aging slower than expected. Thanks pigoo.

- ImageX
 

bobtomay

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Even the older batteries can last a good while. Just had to replace the battery in my wife's '07 MB. It was still holding a 105% of original capacity and giving her about 4 hours on battery - had less than 30 cycles. That battery had been calibrated one time during it's life span.

Had the A/C go out on us a month ago. The 2nd day, the temp inside the house was up to 98 (think it was 110 that day) with her using the notebook when the trackpad started misbehaving and she couldn't click on anything. Eventually figured out, due to the heat the battery had bulged slightly - just enough to put pressure on the trackpad from below and keep it from functioning properly.

Even with the bulge, the battery was functioning properly, just no trackpad while it was in the machine. Yes, we got the A/C replaced and it was turned on about an hour later.
 

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